Bulk Convert don’t keep allready converted

Hi,

i have more 10 000 image to convert, and i can’t give the time to do all.

But every time when i use bulkconvert, he start with the same image.

I start with for example image1.jpeg and after 1 hour i put in pause and close wp.

And when i want use bulkconvert again, it start to convert the same image, image1.jpeg.

I have just mobile phone connection, and can’t let it work all the night!

Can you resolve this bug?

Thanks.